Richard Sweeney, Surface modulation 4, Graphite on canvas (stretched over wooden former) 30cm x 30cm Richard Sweeney, Surface modulation 4 (detail), Graphite on canvas (stretched over wooden former) 30cm x 30cm Richard Sweeney, Surface modulation 3, Graphite on canvas (stretched over wooden former) 30cm x 30cm Richard Sweeney, Surface modulation 2, Acrylic, epoxy resin, fibreglass on canvas. 30cmx30cm